:root {
  color-scheme: light;
  --page: #eef3f8;
  --panel: #ffffff;
  --ink: #111827;
  --muted: #64748b;
  --line: #d8e0ea;
  --soft: #f8fafc;
  --brand: #0f5fd7;
  --brand-dark: #0b3f9c;
  --brand-soft: #eaf2ff;
  --success: #12a064;
  --success-dark: #087a4a;
  --success-soft: #e9fbf3;
  --warning: #b7791f;
  --warning-soft: #fff7e8;
  --danger: #c0362c;
  --danger-soft: #fff0ef;
  --accent: #23c7b7;
  --time-bg: #f4fbff;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--page);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(15, 95, 215, 0.16), transparent 34%),
    linear-gradient(180deg, #f9fbff 0%, var(--page) 100%);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
}

.portal-shell {
  width: min(720px, 100%);
  margin: 0 auto;
  padding: 12px 10px 24px;
}

.portal-title {
  margin: 0 0 10px;
  text-align: center;
  color: #08111f;
  font-size: 48px;
  line-height: 1;
  font-weight: 900;
  letter-spacing: 0;
}

.portal-title::after {
  content: "";
  display: block;
  width: 86px;
  height: 5px;
  margin: 7px auto 0;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--brand) 0%, var(--accent) 100%);
}

.portal-card {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(216, 224, 234, 0.92);
  border-radius: 8px;
  box-shadow: 0 18px 40px rgba(20, 38, 68, 0.12);
  padding: 10px;
}

.device-panel {
  display: grid;
  gap: 6px;
  border-radius: 8px;
  border: 1px solid #d2deea;
  background: linear-gradient(180deg, #f8fbff 0%, #edf4fb 100%);
  padding: 8px;
}

.device-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.device-row-wide {
  grid-template-columns: 1.25fr 0.9fr 1fr;
}

.device-row div {
  min-width: 0;
  display: grid;
  gap: 1px;
  padding: 6px 8px;
  border: 1px solid #dce5ef;
  border-radius: 8px;
  background: #ffffff;
}

.device-row span {
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}

.device-row strong {
  min-width: 0;
  color: var(--ink);
  font-size: 16px;
  font-weight: 900;
  overflow-wrap: anywhere;
}

.ok-text {
  color: var(--success-dark) !important;
}

.warn-text {
  color: var(--warning) !important;
}

.notice-box,
.connected-box,
.wait-box,
.state-box,
.coin-feedback,
.message-line {
  border-radius: 8px;
  padding: 12px 14px;
}

.notice-box {
  margin-top: 12px;
  border: 1px solid #f0d387;
  background: var(--warning-soft);
  color: #684200;
}

.notice-box strong,
.notice-box span,
.connected-box strong,
.connected-box span,
.wait-box strong,
.wait-box span,
.state-box strong,
.state-box span {
  display: block;
}

.notice-box strong,
.connected-box strong,
.wait-box strong,
.state-box strong {
  font-size: 15px;
  font-weight: 900;
}

.notice-box span,
.connected-box span,
.wait-box span,
.state-box span {
  margin-top: 2px;
  font-size: 13px;
}

.main-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(188px, 0.9fr);
  gap: 10px;
  margin-top: 10px;
}

.time-panel {
  min-width: 0;
  background:
    linear-gradient(180deg, rgba(35, 199, 183, 0.10) 0%, transparent 58%),
    var(--time-bg);
  border: 1px solid #b9dff0;
  border-radius: 8px;
  padding: 12px 12px;
  text-align: center;
}

.panel-label {
  display: block;
  color: var(--brand-dark);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.time-panel strong {
  display: block;
  margin: 7px 0 3px;
  color: #06111f;
  font-size: 54px;
  line-height: 1;
  font-weight: 900;
  letter-spacing: 0;
  font-variant-numeric: tabular-nums;
}

.time-panel small {
  display: block;
  min-height: 18px;
  color: #416175;
  font-size: 13px;
  overflow-wrap: anywhere;
}

.access-key-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  margin-top: 10px;
}

.access-key-row.recovery-row {
  margin-top: 8px;
}

.recovery-help {
  display: block;
  margin-top: 7px;
  color: #8a4b00;
  font-size: 12px;
  line-height: 1.35;
}

.access-key-row input,
.access-key-row button {
  min-height: 40px;
  border-radius: 8px;
  font-size: 15px;
}

.access-key-row input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #c8d5e3;
  background: #ffffff;
  color: var(--ink);
}

.access-key-row input:focus {
  outline: 3px solid rgba(15, 95, 215, 0.16);
  border-color: var(--brand);
}

.access-key-row button {
  border: 0;
  padding: 0 14px;
  background: var(--ink);
  color: #ffffff;
  font-weight: 900;
}

.button-panel {
  display: grid;
  gap: 8px;
}

.portal-btn {
  width: 100%;
  min-height: 52px;
  border-radius: 8px;
  padding: 8px 12px;
  border: 1px solid transparent;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0;
  transition: transform 0.12s ease, opacity 0.12s ease, box-shadow 0.12s ease;
}

.portal-btn:active {
  transform: translateY(1px);
}

.portal-btn.primary {
  color: #ffffff;
  background: linear-gradient(180deg, #176fe8 0%, var(--brand) 100%);
  box-shadow: 0 8px 18px rgba(15, 95, 215, 0.24);
}

.portal-btn.success {
  color: #ffffff;
  background: linear-gradient(180deg, #16bd78 0%, var(--success) 100%);
  box-shadow: 0 8px 18px rgba(18, 160, 100, 0.22);
}

.portal-btn.outline {
  color: var(--brand-dark);
  background: #ffffff;
  border-color: #b7cff1;
}

.portal-btn:disabled {
  color: #8b98a9;
  background: #edf1f5;
  border-color: #d8e0ea;
  box-shadow: none;
  cursor: not-allowed;
  opacity: 1;
}

.state-stack {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.state-box {
  border: 1px solid #bfd7f6;
  background: var(--brand-soft);
  color: var(--brand-dark);
}

.wait-box {
  border: 1px solid #9dd7cb;
  background: #eafbf8;
  color: #07685d;
}

.connected-box {
  border: 1px solid #a8e0bf;
  background: var(--success-soft);
  color: var(--success-dark);
}

.coin-feedback {
  border: 1px solid #f0d387;
  background: var(--warning-soft);
  color: #684200;
  font-weight: 800;
}

.message-line {
  border: 1px solid #e3e8ef;
  background: #ffffff;
  color: #475569;
  font-size: 14px;
}

.status-retry-btn {
  width: 100%;
  min-height: 44px;
  border: 1px solid #b7cff1;
  border-radius: 8px;
  background: #ffffff;
  color: var(--brand-dark);
  font-size: 15px;
  font-weight: 900;
}

.status-retry-btn:active {
  transform: translateY(1px);
}

.coin-stop-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(6, 17, 31, 0.58);
}

.coin-stop-modal[hidden] {
  display: none;
}

.coin-stop-dialog {
  width: min(420px, 100%);
  border-radius: 10px;
  border: 1px solid #d8e0ea;
  background: #ffffff;
  box-shadow: 0 24px 64px rgba(6, 17, 31, 0.3);
  padding: 18px;
}

.coin-stop-dialog strong {
  display: block;
  font-size: 21px;
}

.coin-stop-dialog p {
  margin: 8px 0 16px;
  color: #475569;
  line-height: 1.45;
}

.coin-stop-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.coin-stop-actions button {
  min-height: 46px;
  border: 1px solid #c8d5e3;
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  font-weight: 900;
}

.coin-stop-actions button.danger {
  border-color: var(--danger);
  background: var(--danger);
  color: #ffffff;
}

.price-section {
  margin-top: 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #ffffff;
  padding: 12px;
}

.section-title-row {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 12px;
  margin-bottom: 10px;
}

.section-title-row h2 {
  margin: 0;
  color: var(--ink);
  font-size: 21px;
  font-weight: 900;
}

.section-title-row span {
  color: var(--muted);
  font-size: 12px;
  text-align: right;
}

.price-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.price-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  gap: 10px;
  border: 1px solid #dce5ef;
  border-radius: 8px;
  padding: 10px 12px;
  background: #fbfdff;
}

.price-item.best-affordable {
  border-color: #8dddb9;
  background: var(--success-soft);
}

.price-item.best-value::after {
  content: "Best";
  flex: 0 0 auto;
  color: #ffffff;
  background: var(--brand);
  border-radius: 999px;
  padding: 2px 7px;
  font-size: 10px;
  font-weight: 900;
}

.price-item strong {
  color: var(--brand);
  font-size: 17px;
  font-weight: 900;
}

.price-item span {
  color: #243244;
  font-size: 14px;
  text-align: right;
}

.alert {
  margin: 12px 0 0;
  border-radius: 8px;
}

@media (max-width: 560px) {
  .portal-shell {
    padding: 12px 8px 22px;
  }

  .portal-title {
    font-size: 34px;
  }

  .portal-card {
    padding: 10px;
  }

  .device-row,
  .device-row-wide,
  .main-grid,
  .price-grid {
    grid-template-columns: 1fr;
  }

  .device-row div {
    grid-template-columns: auto 1fr;
    align-items: center;
    padding: 5px 7px;
  }

  .device-row strong {
    text-align: right;
    font-size: 15px;
  }

  .time-panel strong {
    font-size: 38px;
  }

  .button-panel {
    grid-template-columns: 1fr;
  }

  .portal-btn {
    min-height: 48px;
    font-size: 16px;
  }

  .section-title-row {
    display: block;
  }

  .section-title-row span {
    display: block;
    margin-top: 3px;
    text-align: left;
  }
}